Install The Belt - Craftsman 139.3043 Owner's Manual

ASSEMBLY STEP 4
Install the Belt
1. Pull the belt around the idler pulley and toward the trolley.
The ribbed side must contact the pufley.
2. Hook the trolley connector into the retaining slot on the trolley
as shown.
3. With the trolley against the screwdriver, dispense the
remainder of the belt along the rail length toward the motor
unit and around the sprocket. The sprocket teeth must engage
the belt.
4. Checkto make sure the belt is not twisted. Connectthe trolley
threaded shaft with the master link, as illustrated:
• Push pins of master link bar through holes in end of belt
and trolley threaded shaft.
• Push master link cap over pins and past pin notches.
• Slide clip-on spring over cap and onto pin notches until both
pins are securely locked in place.
5. Insert the trolley threaded shaft through the hole in the trolley.
Be sure the belt is not twisted.
To avoid possible SERIOUSINJURYto fingers from moving
garage door opener:
• ALWAYS keep hand clear of sprocket while operating opener.
• Securely attach sprocket cover BEFORE operating.
Trolley Connector
Belt Sprocket
Idler
Pulley
Trolley
Connector
Slot
Y
Threaded
Shaft
Master Link
Clip-On Spring
Master
Link Cap
Notch
Trolley Master
Threaded Link Bar
Shaft
[©
Trolley Threaded Shaft
HARDWARESHOWN ACTUALSIZE
i
i
Master Link
10